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A. T. ELFORD.

INSIDE BLINDS.

N0 188,731, w Patented. March 27,1877.

.PATENT rnren ALFRED T. ELFORD, i-OF OAKLAND, CALIFORNIA.

*IMPRfov-EFMENT IN iNsnD-E BLINDs.

Specifioation forming part of Letters Patent No. 188,731, dated March 27, 1877; application filed May 2. 1876.

To all 'whom t may concem:

Be it known that I, ALFRED TowNsEND ELFORD, of Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in the Construction and Arrangement of Inside Blinds for Windows, of which the following is a description, reference being had to the accompanyin g drawing and the letters marked thereon. m Figure 1 is a front elevation, with a section cut to show the action of theblind-slats and their operation by the connecting-rod D, and showing the set-nut F. Fig. 2 is an elevation, showing the opposite side of' the blind. Fig. 3 is a sideelevation, with a section cut out to show an end view of the blind-slats B, the rod D, with loops H connecting with the tenons or pins O, the set-screw S, and setnut F, and the knob E. Fig. 4 is a section showing a 'portion of the connecting-rod D, and the end view of one of the slats. Fig. 5 is a cross-section of the head-strip O. Fig. 6 shows a section of the side stile'of the frame when formed with the bead Q, which with the head-strip N forms an equivalent for the head-strip O. `-(Shown in Fig. 5.) Figs. 7 and 7 x show a flat view or face view of the beadstrip, for the purpose of showing the elongation of the mortises a, which receive -the slat tenons or pins,'which elongations are designed to allow the lateral motion sufficient to tighten the set-screw upon the escntcheon.

The following is the construction of th'e same, the whole being an improvement on my improved blind-stop patented J anfuary12, A. D. 1875, and numbered 158,634.

In the accompanying drawing, A represents the frame; B, the slats; C, the tenonsor pins; D, the rod designed to connect and operate the same; -E, the knob attached to the rod by means of the nut F and screw S. The escutcheon G forms the bearing for the set-nut F, as well as an elongated opening to allow the stem of the set-screw S to pass through `and be moved up and down for the purpose of Operating the rod D, thereby Operating the slats B. The rod D is round, and made from a common wire by swaging the loops H, and then punching the same to receive the staples' which pass through the tenons or pins, as

shown by the dotted lines in Fig. 4. The beadJ is placed close to the edge of the blindslat, thus forming a neat ogee finish, and givinga more ornamental appearance to the same. The head-strip O has the double or ogee bead K L. The bead K is designed to cover the joint or space between the end of the slat and the head-strip, and the bead L is designed to cover the joint between the head-strip and the blind-stile.

By this arrangement, when the slats are closed, the direct rays of light are entirely shut out, as will be seen, the bead J cutting off the light that comes through between the slats and the bead-strip O or N. The groove M, in the edge of the stile, is designed to receive the ends of the slat-tenons and allow the operation of the connecting rod D, which operates the slats B.

It will be seen by reference to Fig. 7 that the mortises that receive the slat pins or tenons are gradually increased in elongation as they approach the bottom, commencin g five or six mortises above the bottom, thus allowing the set-nut F to be drawn firmly against the escutcheon by means of the set-screw S. The rod D, being connected to every slat by means of the solid loops or rings H, forms a very strong and durable connection.

The advantages of my invention are seen in an increased (lurability of construction, in a more neat and ornamental constructonand closing all openings, joints, or cracks fi'om admitting' direct rays of light.

To effect these objects I have constructed the blind-slat B, having the bead J near the upper surface of the lower edge of the same, to form the ogee finish, as has been shown; also, the head-strip O, having the double head K and L to project and cover the joints, as has been shown, and the connecting rod D, with the solid or swaged loops, to link the staples that are attached to the slat-tenons, -as shown in Fig. 4 by the dotted lines.

It will be seen by reference to Fig. 6 that an equivalent for the head-strip 0 may he had by forming the bead Q upon the side stile by rabbeting and placing the head-strip N I do not broadly claim a Wire with loons swaged thereon, and I am aware that sheet metal has been used to form a strip for conneeting the slats of a window-blind, and for the edge, to form the ogee finish and the beadturning the same, thus opening and elosing strip O, having the-double bead K'and L, and the slats; but I believe that a round Wire, elongated mortises a, as set forth and dewith loops swared and punehed thereon, is seribed. an improvement upon a flat strip of Sheet metal, and also patent-able. ALFRED-T' ELFORD' Having thus described my invention, I Witnesses: olaim- 0. H. SOHIVELEY,

The blind-slats B having the bead J near JOHN H. REDSTON'E. 

